Driven out (6)
I believe the answer is:
ousted
'driven out' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for ousted that I've seen before include "Removed from office (6)" , "Put or thrust out" , "Put forcibly out of office" , "Forcibly ejected from office or position" , "Booted out of office" .)